Equalities and Inequalities in the Simple Units Environment - Maple Programming Help

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Equalities and Inequalities in the Simple Units Environment

 

Description

Examples

Description

• 

In the Simple Units environment, any verifications of valid dimensions ignore so-called Unit annotations.

• 

In the Simple Units environment, the equality and inequality relators (=,<,,>,, and) are modified so that they perform the necessary operations on expressions with units.

• 

Every command in the Simple Units environment that needs to determine whether an expression is valid or not, does so using the Units[TestDimensions] command.

• 

The properties of these relators are:

AUnita=BUnitbA=rB

AUnita<BUnitbA<rB

AUnitaBUnitbArB

AUnita>BUnitbA>rB

AUnitaBUnitbArB

AUnitaBUnitbArB

  

where a and b are units; A and B are coefficients; and r is the conversion factor from the unit b to the unit a.

Examples

Notes: 

– 

To enter a unit in 2-D Math input, select the unit from the appropriate Units palette. If the unit you want is not there, select unit and then enter the unit.

– 

When you edit a unit, double brackets appear around it.

withUnitsSimple&colon;

3Unitft=Unityd

3=3

(1)

evalb

true

(2)

1.60Unitm<Unitmi

1.60<201168125

(3)

evalb

true

(4)

30.48Unitcm=Unitft

30.48=76225

(5)

evalb

true

(6)

3Unitft+3Unitinch=Unitm

49535000=1

(7)

evalb

false

(8)

See Also

equalities and inequalities

Units

Units/Simple